Gas-heated sad-iron.



G. T. ROSENGREN.

GAS HEATED SAD IRON.

APPLICATION FILEDSEPT. 14, 1914.

1,167,840. Patented Jan. 11, 1916. l

,iirrn srafrnsrarnivr orme GEORGE T. ROSENGREN, OF CHICAGO, ILLINOIS, ASSIGNORrTO ENTERPRISE TOOL' &

METAL WORKS, F CHICAGO, ILLINOIS, A CORPORATION.

GAS-HEATED SAD-IRON.

Specification of Letters Patent.

Patented Jan. 11, 1916.

Application filed September 14, 1914. Serial No. 861,505. p

for preventing the heat from being directed adjacent the handle above the top.

A further object of the invention is to prog vide an improved burner whereby the base of the iron will be uniformly heated.

rlhe invention consists in the several novel features hereinafter set forth and more particularly defined by claims at the conclusion hereof.

In the drawing: Figure 1 is a view partly in longitudinal section and partly in elevation of a sad iron embodying the invention.'A

Fig. 2 is an inverted plan of the cover of the iron and the shield secured thereto. Fig. 3 is a transverse section. Figs. Il and' are detail sections of the controlling valve attached to the iron. Fig. 6 is an inverted plan of the burner pipe.

The body of the iron has a combustion chamber 11 therein which contains -a burner pipe 12 which extends longitudinally in the chamber and is provided with slits 15 through which gas escapes from the pipe for ignition, so that combustion will occur adjacent the bottom of the body 1 0 to `heat the body. These slits 15 gradually increase in depth from the inlet end of the burner to the opposite end. These slits are formed by holding the pipe at a slight angle with respect to the axis of a gang of cutters. The purpose of thus graduating the depth or size of the slits is to equally distribute the escape of gas throughout the burner pipe so that all portions of the bottom of the iron will be uniformly heated. Holes 22 are formed in the sides of the body adjacent the bottom to supply air for combustion to the burner. Ribs 23 are formed on said bottom between holes 22. The side walls of body 10 are formed with notches or openings 24 for the escape of the products of combustion. A cover 25 is removably secured to the top of the body by a headed screw 26 which is adapted to hold the slotted front end of cover Y25 and a latch 27, which is pivoted on a screw 28 which is secured in the top of the body. This latch may be turned so that it will be disposed over the slot 29 in the cover 25 to permit the cover to be removed, and, when turned to overlie the cover, will secure the cover to the body. The burner pipe 12 extends through the back wall 16 of the body 10 of the iron, is secured therein by a screw 17, and extends upwardly and rearwardly from Athe wall, as at'12?. lA valve casing 30 is screw-threadedl into the upper end of said pipe and said casing is provided with a terminal 31 which is adapted for'connection to one end of av flexible hose which has its other end connected to the usual burner on a gas supply pipe. This valve casing has an opening 32 extending'throughinlet terminal 31 and its inner end is provided with a nozzle 33. A plug valve, comprising a plug 34, a reduced stem 35 and a handle 36, is journaled in a cylindrical seat 37 in casing 30. The stem and plug are separately formed' and driven or otherwise secured together after a follower 36a has been'placed on the stem. This follower 36a is screw-threaded into the casing and packing 39 interposed between the follower and the plug provides anl effective gas-tight lconnection which prevents the escape of gasfaround the stem. Furthermore, this construction makes it unnecessary to extend 4the plug entirely through the valve-casing.

l The plug is provided with a large through"l port 38 which, when the valve is turned to permit gas to flow therethrough, will cause the proper amount of gas, for keeping the iron at ironing temperature, to pass through the valve and through nozzle 33 into the burner tube extension 12a, which is provided with air inlets 40. The plug is also pro-- vided with a small annular groove which, when the valve is turned to close port 38, will permit the proper quantity of gas to be supplied to the burner to prevent the ame from being extinguished. The valve ports and the port in the casing are arranged so that it is impossible to entirely cut 0H the supply of gas at the valve because the valve is at all times open through either one or the other of the intersecting through ports. Resultantly, either a full flow of gas In practice, it has been found that betterA results are obtained and danger of the escape of gas from improper regulation is avoided,-by providing for fixed volumes of How, and constructingv the valve so it is impossible to cnt off the gas entirely adjacent the iron.

A shield 4l is secured to the underside of cover 25 and in spaced relation thereto by suitable bolts 4Q which also serve to connect the handle 43 to the cover. The marginal portions of this shield are adapted to fit upon the topl of the body 10 of the iron at the sides of the body which terminate below the cover 25. rIhe front and rear ends of the shield extend into the body 10. The shield is also provided with holes 45. In practice it has been found that the heat escaping from the combustion chamber through the outlets 24 and over the sides of the body tends to pass around the side of the cover and into proximity of the operators hand on the handle. It has also been discovered that the perforated shield serves effectively to prevent the heat from passing toward the operators hand, and also promotes combustion. By providing a shield that is spaced from the cover and is perforated, air is free to pass into the space between the shield and the cover and by providing openings 24 in the side walls of the body, and perforations in the shield, the tendency of the heat to pass upwardly around the sides of the cover and adjacent to the operators hand is neutralized. Furthermore, this construction aids combustion and renders the iron odorless when in use, as the result of perfect combustion.

The invention is not to be understood as restricted to the details set forth, since these may be modified within the scope of the appended claims without departing from the s piritand scope of the invention.

Having` thus described the invention, wh at I claim as new and desire to secure by Iletters Patent, is:

l. A sad iron comprisinga body having' a Ychamber therein, a cover, a handle secured to the cover, a burner pipe extending,` into the chamber, and a perforated shield secured in spaced relation to the cover, the body having openings therein above and below the shield, the openings below the shield being` disposed adjacent the shield.

2. vA sad iron comprising a body having,- a chamber therein, a cover removably secured to the body, a handle secured to the cover, a burner pipe extending` into the chamber, and a perforated shield secured in spaced relation to the cover and removable therewith, the body having openings therein above and below the shield, the openings below the shield being disposed adjacent the shield.

3. A sad ii'on comprising` a body having a chamber therein, a cover, a handle, and a tubular burner pipe extending' into said chamber and secured to said body, said pipe having parallel sided slits therein extendingat an oblique angle with respect to the axis of the tube and of gradually increasing' depth from the inlet portion of said pipe.

4L. A sad iron comprising` a body havinga chambertherein, a cover, the body having` portions of its sides terminating below the cover, and a handle secured to the cover, a burner pipe extending into the chamber, and a perforated shield secured in spaced relation to the cover `and disposed to cverlie said side portions, the latter being,` notched immediately below the shield.

GEORGE T.A ROSENGRICN. Vitnesses: I

KATHARINE GiinLAoii, MiLDRiiD STUMPF.

Copies of this patent may lie-obtained for ve cents each, by addressing the Commissioner of atents,

Washington, D. C. 

